What did students learn? This manipulative introduce students to the idea of visual representation of data by means of a bar chart.The drop down menus can create as many as 12 columns, each with as many as 20 cells.

This material is based upon work supported by the
National Science Foundation under Grant DUE-0226284.
Any opinions, findings, and conclusions or recommendations
expressed in this material are those of the author(s)
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National Science Foundation.